Most of the cakes are baked in oven with convection,that is which has pre-heating option.The chances are very limited when it comes to normal microwave ovens. Need cake receipes which can be baked in normal microwave ovens which does not have preheating.
try this http://www.indusladies.com/forums/recipe-central/201287-cake-5mins-tat-possible-try-10.html http://www.indusladies.com/forums/recipe-central/216517-5min-healthy-wheat-jaggery-cake.html